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继续收藏一些PHP常用函数_php技巧

PHP中文网
PHP中文网
May 17, 2016 am 09:35 AM
常用函數

方便以后制作php程序，直接拿来就可以用了，其实一些好的函数都在一些较成熟的cms系统中都有，例如dedecms，帝国cms,phpcms等，不论是gb2312的还是utf8格式的都有。

<? 
function GetIP() { //获取IP 
if ($_SERVER["HTTP_X_FORWARDED_FOR"]) 
$ip = $_SERVER["HTTP_X_FORWARDED_FOR"]; 
else if ($_SERVER["HTTP_CLIENT_IP"]) 
$ip = $_SERVER["HTTP_CLIENT_IP"]; 
else if ($_SERVER["REMOTE_ADDR"]) 
$ip = $_SERVER["REMOTE_ADDR"]; 
else if (getenv("HTTP_X_FORWARDED_FOR")) 
$ip = getenv("HTTP_X_FORWARDED_FOR"); 
else if (getenv("HTTP_CLIENT_IP")) 
$ip = getenv("HTTP_CLIENT_IP"); 
else if (getenv("REMOTE_ADDR")) 
$ip = getenv("REMOTE_ADDR"); 
else 
$ip = "Unknown"; 
return $ip; 
} 
?>
<?php 
function DateAdd($date, $int, $unit = "d") { //时间的增加（还可以改进成时分秒都可以增加，有时间再补上） 
$dateArr = explode("-", $date); 
$value[$unit] = $int; 
return date("Y-m-d", mktime(0,0,0, $dateArr[1] + $value[&#39;m&#39;], $dateArr[2] + $value[&#39;d&#39;], $dateArr[0] + $value[&#39;y&#39;])); 
} 
function GetWeekDay($date) { //计算出给出的日期是星期几 
$dateArr = explode("-", $date); 
return date("w", mktime(0,0,0,$dateArr[1],$dateArr[2],$dateArr[0])); 
} 
?>
<? 
function check_date($date) { //检查日期是否合法日期 
$dateArr = explode("-", $date); 
if (is_numeric($dateArr[0]) && is_numeric($dateArr[1]) && is_numeric($dateArr[2])) { 
return checkdate($dateArr[1],$dateArr[2],$dateArr[0]); 
} 
return false; 
} 
function check_time($time) { //检查时间是否合法时间 
$timeArr = explode(":", $time); 
if (is_numeric($timeArr[0]) && is_numeric($timeArr[1]) && is_numeric($timeArr[2])) { 
if (($timeArr[0] >= 0 && $timeArr[0] <= 23) && ($timeArr[1] >= 0 && $timeArr[1] <= 59) && ($timeArr[2] >= 0 && $timeArr[2] <= 59)) 
return true; 
else 
return false; 
} 
return false; 
} 
function DateDiff($date1, $date2, $unit = "") { //时间比较函数，返回两个日期相差几秒、几分钟、几小时或几天 
switch ($unit) { 
case &#39;s&#39;: 
$pidend = 1; 
break; 
case &#39;i&#39;: 
$pidend = 60; 
break; 
case &#39;h&#39;: 
$pidend = 3600; 
break; 
case &#39;d&#39;: 
$pidend = 86400; 
break; 
default: 
$pidend = 86400; 
} 
$time1 = strtotime($date1); 
$time2 = strtotime($date2); 
if ($time1 && $time2) 
return (float)($time1 - $time2) / $pidend; 
return false; 
} 
?>


PHP重定向 

方法一：header("Location: index.php"); 
方法二：echo "<scrīpt>window.location ="$PHP_SELF";</scrīpt>"; 
方法三：echo "<META HTTP-EQUIV="Refresh" CONTENT="0; URL=index.php">"; 
?>

获取访问者浏览器 

<? 
function browse_infor() 
{ 
$browser="";$browserver=""; 
$Browsers =array("Lynx","MOSAIC","AOL","Opera","JAVA","MacWeb","WebExplorer","OmniWeb"); 
$Agent = $GLOBALS["HTTP_USER_AGENT"]; 
for ($i=0; $i<=7; $i++) 
{ 
if (strpos($Agent,$Browsers[$i])) 
{ 
$browser = $Browsers[$i]; 
$browserver =""; 
} 
} 
if (ereg("Mozilla",$Agent) && !ereg("MSIE",$Agent)) 
{ 
$temp =explode("(", $Agent); $Part=$temp[0]; 
$temp =explode("/", $Part); $browserver=$temp[1]; 
$temp =explode(" ",$browserver); $browserver=$temp[0]; 
$browserver =preg_replace("/([d.]+)/","1",$browserver); 
$browserver = " $browserver"; 
$browser = "Netscape Navigator"; 
} 
if (ereg("Mozilla",$Agent) && ereg("Opera",$Agent)) 
{ 
$temp =explode("(", $Agent); $Part=$temp[1]; 
$temp =explode(")", $Part); $browserver=$temp[1]; 
$temp =explode(" ",$browserver);$browserver=$temp[2]; 
$browserver =preg_replace("/([d.]+)/","1",$browserver); 
$browserver = " $browserver"; 
$browser = "Opera"; 
} 
if (ereg("Mozilla",$Agent) && ereg("MSIE",$Agent)) 
{ 
$temp = explode("(", $Agent); $Part=$temp[1]; 
$temp = explode(";",$Part); $Part=$temp[1]; 
$temp = explode(" ",$Part);$browserver=$temp[2]; 
$browserver =preg_replace("/([d.]+)/","1",$browserver); 
$browserver = " $browserver"; 
$browser = "Internet Explorer"; 
} 
if ($browser!="") 
{ 
$browseinfo = "$browser$browserver"; 
} 
else 
{ 
$browseinfo = "Unknown"; 
} 
return $browseinfo; 
} 
//调用方法$browser=browseinfo() ;直接返回结果 
?>

获取访问者操作系统 

<? 
function osinfo() { 
$os=""; 
$Agent = $GLOBALS["HTTP_USER_AGENT"]; 
if (eregi(&#39;win&#39;,$Agent) && strpos($Agent, &#39;95&#39;)) { 
$os="Windows 95"; 
} 
elseif (eregi(&#39;win 9x&#39;,$Agent) && strpos($Agent, &#39;4.90&#39;)) { 
$os="Windows ME"; 
} 
elseif (eregi(&#39;win&#39;,$Agent) && ereg(&#39;98&#39;,$Agent)) { 
$os="Windows 98"; 
} 
elseif (eregi(&#39;win&#39;,$Agent) && eregi(&#39;nt 5.0&#39;,$Agent)) { 
$os="Windows 2000"; 
} 
elseif (eregi(&#39;win&#39;,$Agent) && eregi(&#39;nt&#39;,$Agent)) { 
$os="Windows NT"; 
} 
elseif (eregi(&#39;win&#39;,$Agent) && eregi(&#39;nt 5.1&#39;,$Agent)) { 
$os="Windows XP"; 
} 
elseif (eregi(&#39;win&#39;,$Agent) && ereg(&#39;32&#39;,$Agent)) { 
$os="Windows 32"; 
} 
elseif (eregi(&#39;linux&#39;,$Agent)) { 
$os="Linux"; 
} 
elseif (eregi(&#39;unix&#39;,$Agent)) { 
$os="Unix"; 
} 
elseif (eregi(&#39;sun&#39;,$Agent) && eregi(&#39;os&#39;,$Agent)) { 
$os="SunOS"; 
} 
elseif (eregi(&#39;ibm&#39;,$Agent) && eregi(&#39;os&#39;,$Agent)) { 
$os="IBM OS/2"; 
} 
elseif (eregi(&#39;Mac&#39;,$Agent) && eregi(&#39;PC&#39;,$Agent)) { 
$os="Macintosh"; 
} 
elseif (eregi(&#39;PowerPC&#39;,$Agent)) { 
$os="PowerPC"; 
} 
elseif (eregi(&#39;AIX&#39;,$Agent)) { 
$os="AIX"; 
} 
elseif (eregi(&#39;HPUX&#39;,$Agent)) { 
$os="HPUX"; 
} 
elseif (eregi(&#39;NetBSD&#39;,$Agent)) { 
$os="NetBSD"; 
} 
elseif (eregi(&#39;BSD&#39;,$Agent)) { 
$os="BSD"; 
} 
elseif (ereg(&#39;OSF1&#39;,$Agent)) { 
$os="OSF1"; 
} 
elseif (ereg(&#39;IRIX&#39;,$Agent)) { 
$os="IRIX"; 
} 
elseif (eregi(&#39;FreeBSD&#39;,$Agent)) { 
$os="FreeBSD"; 
} 
if ($os==&#39;&#39;) $os = "Unknown"; 
return $os; 
} 
//调用方法$os=os_infor() ; 
?>

文件格式类 

<? 
$mime_types = array( 
&#39;gif&#39; => &#39;image/gif&#39;, 
&#39;jpg&#39; => &#39;image/jpeg&#39;, 
&#39;jpeg&#39; => &#39;image/jpeg&#39;, 
&#39;jpe&#39; => &#39;image/jpeg&#39;, 
&#39;bmp&#39; => &#39;image/bmp&#39;, 
&#39;png&#39; => &#39;image/png&#39;, 
&#39;tif&#39; => &#39;image/tiff&#39;, 
&#39;tiff&#39; => &#39;image/tiff&#39;, 
&#39;pict&#39; => &#39;image/x-pict&#39;, 
&#39;pic&#39; => &#39;image/x-pict&#39;, 
&#39;pct&#39; => &#39;image/x-pict&#39;, 
&#39;tif&#39; => &#39;image/tiff&#39;, 
&#39;tiff&#39; => &#39;image/tiff&#39;, 
&#39;psd&#39; => &#39;image/x-photoshop&#39;, 
&#39;swf&#39; => &#39;application/x-shockwave-flash&#39;, 
&#39;js&#39; => &#39;application/x-javascrīpt&#39;, 
&#39;pdf&#39; => &#39;application/pdf&#39;, 
&#39;ps&#39; => &#39;application/postscrīpt&#39;, 
&#39;eps&#39; => &#39;application/postscrīpt&#39;, 
&#39;ai&#39; => &#39;application/postscrīpt&#39;, 
&#39;wmf&#39; => &#39;application/x-msmetafile&#39;, 
&#39;css&#39; => &#39;text/css&#39;, 
&#39;htm&#39; => &#39;text/html&#39;, 
&#39;html&#39; => &#39;text/html&#39;, 
&#39;txt&#39; => &#39;text/plain&#39;, 
&#39;xml&#39; => &#39;text/xml&#39;, 
&#39;wml&#39; => &#39;text/wml&#39;, 
&#39;wbmp&#39; => &#39;image/vnd.wap.wbmp&#39;, 
&#39;mid&#39; => &#39;audio/midi&#39;, 
&#39;wav&#39; => &#39;audio/wav&#39;, 
&#39;mp3&#39; => &#39;audio/mpeg&#39;, 
&#39;mp2&#39; => &#39;audio/mpeg&#39;, 
&#39;avi&#39; => &#39;video/x-msvideo&#39;, 
&#39;mpeg&#39; => &#39;video/mpeg&#39;, 
&#39;mpg&#39; => &#39;video/mpeg&#39;, 
&#39;qt&#39; => &#39;video/quicktime&#39;, 
&#39;mov&#39; => &#39;video/quicktime&#39;, 
&#39;lha&#39; => &#39;application/x-lha&#39;, 
&#39;lzh&#39; => &#39;application/x-lha&#39;, 
&#39;z&#39; => &#39;application/x-compress&#39;, 
&#39;gtar&#39; => &#39;application/x-gtar&#39;, 
&#39;gz&#39; => &#39;application/x-gzip&#39;, 
&#39;gzip&#39; => &#39;application/x-gzip&#39;, 
&#39;tgz&#39; => &#39;application/x-gzip&#39;, 
&#39;tar&#39; => &#39;application/x-tar&#39;, 
&#39;bz2&#39; => &#39;application/bzip2&#39;, 
&#39;zip&#39; => &#39;application/zip&#39;, 
&#39;arj&#39; => &#39;application/x-arj&#39;, 
&#39;rar&#39; => &#39;application/x-rar-compressed&#39;, 
&#39;hqx&#39; => &#39;application/mac-binhex40&#39;, 
&#39;sit&#39; => &#39;application/x-stuffit&#39;, 
&#39;bin&#39; => &#39;application/x-macbinary&#39;, 
&#39;uu&#39; => &#39;text/x-uuencode&#39;, 
&#39;uue&#39; => &#39;text/x-uuencode&#39;, 
&#39;latex&#39;=> &#39;application/x-latex&#39;, 
&#39;ltx&#39; => &#39;application/x-latex&#39;, 
&#39;tcl&#39; => &#39;application/x-tcl&#39;, 
&#39;pgp&#39; => &#39;application/pgp&#39;, 
&#39;asc&#39; => &#39;application/pgp&#39;, 
&#39;exe&#39; => &#39;application/x-msdownload&#39;, 
&#39;doc&#39; => &#39;application/msword&#39;, 
&#39;rtf&#39; => &#39;application/rtf&#39;, 
&#39;xls&#39; => &#39;application/vnd.ms-excel&#39;, 
&#39;ppt&#39; => &#39;application/vnd.ms-powerpoint&#39;, 
&#39;mdb&#39; => &#39;application/x-msaccess&#39;, 
&#39;wri&#39; => &#39;application/x-mswrite&#39;, 
); 
?>


php生成excel文档 

<? 
header("Content-type:application/vnd.ms-excel"); 
header("Content-Disposition:filename=test.xls"); 
echo "test1t"; 
echo "test2tn"; 
echo "test1t"; 
echo "test2tn"; 
echo "test1t"; 
echo "test2tn"; 
echo "test1t"; 
echo "test2tn"; 
echo "test1t"; 
echo "test2tn"; 
echo "test1t"; 
echo "test2tn"; 
//改动相应文件头就可以输出.doc .xls等文件格式了 
?>


时间比较问题
举一个简单例子说明:比如一个论坛对当天发表的贴子用new图片标记一下。
方法一： 

<? 
//$db->rows[$i][date]中为数据库中datetime字段值. 
$today=time(); 
$theDay=date("Y-m-d H:i:s",$today-24*3600); 
$newTag=$db->rows[$i][date]>=$theDay?"<img src=&#39;../image/newinfor.gif&#39;>":""; 
//方法二： 
$newTag=$db->rows[$i][date]>=date("Y-m-d 00:00:00")?"<img src=&#39;../image/newinfor.gif&#39;>":""; 
?>

//提取页面和浏览器提交的变量，作用相当于使PHP.INI开了全局变量 

<? 
@extract($_SERVER, EXTR_SKIP); 
@extract($_SESSION, EXTR_SKIP); 
@extract($_POST, EXTR_SKIP); 
@extract($_FILES, EXTR_SKIP); 
@extract($_GET, EXTR_SKIP); 
@extract($_ENV, EXTR_SKIP); 
?>

//读取文件函数 

<? 
function readfromfile($file_name) { 
if (file_exists($file_name)) { 
$filenum=fopen($file_name,"r"); 
flock($filenum,LOCK_EX); 
$file_data=fread($filenum, filesize($file_name)); 
rewind($filenum); 
fclose($filenum); 
return $file_data; 
} 
} 
?>

//写入文件函数 

<? 
function writetofile($file_name,$data,$method="w") { 
$filenum=fopen($file_name,$method); 
flock($filenum,LOCK_EX); 
$file_data=fwrite($filenum,$data); 
fclose($filenum); 
return $file_data; 
} 
?>

//页面快速转向 

<? 
function turntopage($url="index.php",$info = "页面转向中...",$second=2){ 
print "<html>n<head>n<title>页面转向中....</title>n"; 
print "<meta http-equiv="refresh" content="$second;url=$url">n"; 
print "<style type="text/css">n<!--n"; 
print "td { font-family: "Verdana", "Arial";font-size: 12px}n"; 
print "A {COLOR: #000000; TEXT-DECORATION: none}n"; 
print "-->n</style>n"; 
print "</head>n<body>n"; 
print "<table width="100%" border="0" align="center">n"; 
print " <tr>n"; 
print " <td height="200"> </td>n"; 
print " </tr>n"; 
print " <tr>n"; 
print " <td align="center">n"; 
print " <table width="60%" border="0" cellpadding="8" bgcolor="#AA9FFF">n"; 
print " <tr>n"; 
print " <td height="30" align="center">页面转向提示信息</td>n"; 
print " </tr>n"; 
print " <tr>n"; 
print " <td align="center">$info</td>n"; 
print " </tr>n"; 
print " <tr>n"; 
print " <td align="center">n"; 
print " <a href="$url">如果你的浏览器不支持自动跳转,请按这里</a></td>n"; 
print " </tr>n"; 
print " </tr>n"; 
print " </table></td>n"; 
print " </tr>n"; 
print " <tr>n"; 
print " <td height="200"> </td>n"; 
print " </tr>n"; 
print "</table>n"; 
print "</body>n</html>"; 
exit; 
?>

产生随机字符串函数 

<? 
function random($length) { 
$hash = @#@#; 
$chars = @#ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz@#; 
$max = strlen($chars) - 1; 
mt_srand((double)microtime() * 1000000); 
for($i = 0; $i < $length; $i++) { 
$hash .= $chars[mt_rand(0, $max)]; 
} 
return $hash; 
} 
?>

截取一定长度的字符串（该函数对GB2312使用有效） 

<? function Wordscut($string, $length ,$sss=0) { if(strlen($string) > $length) { if($sss){ $length=$length - 3; $addstr=@# ...@#; } for($i = 0; $i < $length; $i++) { if(ord($string[$i]) > 127) { $wordscut .= $string[$i].$string[$i + 1]; $i++; } else { $wordscut .= $string[$i]; } } return $wordscut.$addstr; } return $string; } ?>

取得客户端IP地址 

<? 
function GetIP(){ 
if (getenv("HTTP_CLIENT_IP") && strcasecmp(getenv("HTTP_CLIENT_IP"), "unknown")) 
$ip = getenv("HTTP_CLIENT_IP"); 
else if (getenv("HTTP_X_FORWARDED_FOR") && strcasecmp(getenv("HTTP_X_FORWARDED_FOR"), "unknown")) 
$ip = getenv("HTTP_X_FORWARDED_FOR"); 
else if (getenv("REMOTE_ADDR") && strcasecmp(getenv("REMOTE_ADDR"), "unknown")) 
$ip = getenv("REMOTE_ADDR"); 
else if (isset($_SERVER[@#REMOTE_ADDR@#]) && $_SERVER[@#REMOTE_ADDR@#] && strcasecmp($_SERVER[@#REMOTE_ADDR@#], "unknown")) 
$ip = $_SERVER[@#REMOTE_ADDR@#]; 
else 
$ip = "unknown"; 
return($ip); 
} 
?>


判断邮箱地址 

<? 
function checkEmail($inAddress) 
{ 
return (ereg("^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(.[a-zA-Z0-9_-])+",$inAddress)); 
} 
?>

分页（两个函数配合使用） 

<? 
function getpage($sql,$page_size=20) 
{ 
global $page,$totalpage,$sums; //out param 
$page = $_GET["page"]; 
//$eachpage = $page_size; 
$pagesql = strstr($sql," from "); 
$pagesql = "select count(*) as ids ".$pagesql; 
$result = mysql_query($pagesql); 
if($rs = mysql_fetch_array($result)) $sums = $rs[0]; 
$totalpage = ceil($sums/$page_size); 
if((!$page)($page<1)) $page=1; 
$startpos = ($page-1)*$page_size; 
$sql .=" limit $startpos,$page_size "; 
return $sql; 
} 
function showbar($string="") 
{ 
global $page,$totalpage; 
$out="共<font ".$totalpage."color=@#red@#><b>".$totalpage."</b></font>页 "; 
$linkNum =4; 
$start = ($page-round($linkNum/2))>0 ? ($page-round($linkNum/2)) : "1"; 
$end = ($page+round($linkNum/2))<$totalpage ? ($page+round($linkNum/2)) : $totalpage; 
$prestart=$start-1; 
$nextend=$end+1; 
if($page<>1) 
$out .= "<a href=@#?page=1&&".$string."@#title=第一页>第一页</a> "; 
if($start>1) 
$out.="<a href=@#?page=".$prestart."@# title=上一页>..<<</a> "; 
for($t=$start;$t<=$end;$t++) 
{ 
$out .= ($page==$t) ? "<font [".$t."]color=@#red@#><b>[".$t."]</b></font> " : "<a $thref=@#?page=$t&&".$string."@#>$t</a> "; 
} 
if($end<$totalpage) 
$out.="<a href=@#?page=".$nextend."&&".$string."@# title=下一页>>>..</a>"; 
if($page<>$totalpage) 
$out .= " <a href=@#?page=".$totalpage."&&".$string."@# title=最后页>最后页</a>"; 
return $out; 
} 
?>


获取新插入数据的ID 

<? 
mysql_insert_id(); 
?>


//获得当前的脚本网址 

<? 
function get_php_url(){ 
if(!empty($_server["REQUEST_URI"])){ 
$scriptName = $_SERVER["REQUEST_URI"]; 
$nowurl = $scriptName; 
}else{ 
$scriptName = $_SERVER["PHP_SELF"]; 
if(empty($_SERVER["QUERY_STRING"])) $nowurl = $scriptName; 
else $nowurl = $scriptName."?".$_SERVER["QUERY_STRING"]; 
} 
return $nowurl; 
} 
?>


//把全角数字转为半角数字 

<? 
function GetAlabNum($fnum){ 
$nums = array("０","１","２","３","４","５","６","７","８","９"); 
$fnums = "0123456789"; 
for($i=0;$i<=9;$i++) $fnum = str_replace($nums[$i],$fnums[$i],$fnum); 
$fnum = ereg_replace("[^0-9.]|^0{1,}","",$fnum); 
if($fnum=="") $fnum=0; 
return $fnum; 
} 
?>


//去除HTML标记 

<? 
function Text2Html($txt){ 
$txt = str_replace(" ","　",$txt); 
$txt = str_replace("<","<",$txt); 
$txt = str_replace(">",">",$txt); 
$txt = preg_replace("/[rn]{1,}/isU"," 
rn",$txt); 
return $txt; 
} 
?>


//相对路径转化成绝对路径 

<? 
function relative_to_absolute($content, $feed_url) { 
preg_match(&#39;/(http|https|ftp):///&#39;, $feed_url, $protocol); 
$server_url = preg_replace("/(http|https|ftp|news):///", "", $feed_url); 
$server_url = preg_replace("//.*/", "", $server_url); 
if ($server_url == &#39;&#39;) { 
return $content; 
} 
if (isset($protocol[0])) { 
$new_content = preg_replace(&#39;/href="//&#39;, &#39;href="&#39;.$protocol[0].$server_url.&#39;/&#39;, $content); 
$new_content = preg_replace(&#39;/src="//&#39;, &#39;src="&#39;.$protocol[0].$server_url.&#39;/&#39;, $new_content); 
} else { 
$new_content = $content; 
} 
return $new_content; 
} 
?>

//取得所有链接 

<? 
function get_all_url($code){ 
preg_match_all(&#39;/<as+href=["|&#39;]?([^>"&#39; ]+)["|&#39;]?s*[^>]*>([^>]+)</a>/i&#39;,$code,$arr); 
return array(&#39;name&#39;=>$arr[2],&#39;url&#39;=>$arr[1]); 
} 
?>

//HTML表格的每行转为CSV格式数组 

<? 
function get_tr_array($table) { 
$table = preg_replace("&#39;<td[^>]*?>&#39;si",&#39;"&#39;,$table); 
$table = str_replace("</td>",&#39;",&#39;,$table); 
$table = str_replace("</tr>","{tr}",$table); 
//去掉 HTML 标记 
$table = preg_replace("&#39;<[/!]*?[^<>]*?>&#39;si","",$table); 
//去掉空白字符 
$table = preg_replace("&#39;([rn])[s]+&#39;","",$table); 
$table = str_replace(" ","",$table); 
$table = str_replace(" ","",$table); 
$table = explode(",{tr}",$table); 
array_pop($table); 
return $table; 
} 
?>

//将HTML表格的每行每列转为数组，采集表格数据 

<? function get_td_array($table) { $table = preg_replace("&#39;<table[^>]*?>&#39;si","",$table); $table = preg_replace("&#39;<tr[^>]*?>&#39;si","",$table); $table = preg_replace("&#39;<td[^>]*?>&#39;si","",$table); $table = str_replace("</tr>","{tr}",$table); $table = str_replace("</td>","{td}",$table); //去掉 HTML 标记 $table = preg_replace("&#39;<[/!]*?[^<>]*?>&#39;si","",$table); //去掉空白字符 $table = preg_replace("&#39;([rn])[s]+&#39;","",$table); $table = str_replace(" ","",$table); $table = str_replace(" ","",$table); $table = explode(&#39;{tr}&#39;, $table); array_pop($table); foreach ($table as $key=>$tr) { $td = explode(&#39;{td}&#39;, $tr); array_pop($td); $td_array[] = $td; } return $td_array; } ?>

//返回字符串中的所有单词 $distinct=true 去除重复 

<? 
function split_en_str($str,$distinct=true) { 
preg_match_all(&#39;/([a-zA-Z]+)/&#39;,$str,$match); 
if ($distinct == true) { 
$match[1] = array_unique($match[1]); 
} 
sort($match[1]); 
return $match[1]; 
} 
?>


//打印出为本PHP项目做出贡献的人员的清单 

<? 
string phpcredits(void) 
?>
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